Assigkktor



w. F. ZIMIMERMANN. SPINDLE SUPPORTING MEMBER.

APPLICATION FILED MAY I4. 1921.

. Reissued July 19, 1921.

mvzuron ATTORNEY UNITED STATES PATENT OFFICE.

WILLIAM F. ZIMMERMANN, F MAPLEWOOD, NEW JERSEY, ASSIG-NOR TO GOULD 8aEBEBHARDT, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SPINDLE-SUPPORTING MEMBER.

Specification of Reissued Letters Patent. Rei u d July 19, 1921 OriginalNo. 1,304,643, dated May 27, 1919, Serial No. 172,489, filed June 2,1917. Application for reissue filed. May 14, 1921.

To all whom it may concern:

Be it known that I, WILLIAM. F. ZIMMER- MANN, a citizen of the UnitedStates, and a resident of Maplewood, in the county of Essex and State ofNew Jersey, have invented certain new and useful Improvements inSpindle-Supporting Members, and do hereby declare the followingspecification, taken in connection with the drawings 10 forming part ofsame, to be a full, clear,

concise, and exact description of the invention and the best modecontemplated to apply the principle thereof, so as to distinguish itfrom other inventions and to enable 16 any person skilled in the art towhich it appertains or with which it is most nearly connected to make,construct, and use the same.

This invention relates primarily to ma- 20 chines in which a cutter orwork spindle is provided with an end support bearing, and moreparticularly to a milling and gear cut tinfi machine.

achines that require a spindle support have heretofore been arrangedwith means, for supportin the outer end of the cutter or work spincfie,in the form of a cylindrical member adjustably secured to a part of themachine and a spindle bearing circumscribing said cylinder. In such 'aconstruction the bearing member was generally arranged to be movedlongitudinally and to be swiveled about said cylindrical member. Meanswere also provided to clamp said bearing member in any position on thecylinder. This cylindrical form of spindle support was found inadequateto resist the stresses produced by cutting tools operated under modernconditions.

To better resist the severe stresses a column or box type of spindlesupport was produced which is usually provided with a dove-tail or arectangular uide-way for a bearing member which can be clamped indifferent positions on said column. The great disadvantage of thiscolumn or box t pe of spindle support lies in the fact that t e bearingmember must be entirely removed when it is desired to remove the cuttorsor work from the spindle.

The removal of the bearing member was not necessary in the cylindricaltype of support because the bearing could be sw1v- Serial No. 469,569.

cled and secured in aposition which did not interfere with the removalof the work or cutters. The swivel feature resulted in an extended useof the cylindrical type of support.

The primary object of this invention is to include in one construction,the rigidity of the column or box type of spindle support and theadaptability of the cylindrical type of spindle support.

Other objects will be apparent from, and are incorporated in the annexeddrawings, and in the following description, which sets forth in detail,certain contrivances embodying means, constituting however, but one ofthe various mechanical forms in whicph the principle of the inventionmay be use The noveltyof the invention will be readily understood fromthe drawings, which show a construction for practising the invention inits preferred form, and from the following description thereof, and ismore specifically pointed outv and distinctly claimed in the claimsannexed to said description.

In the drawings Figure 1 is a side elevation of the invention forsupporting a vertical spindle.

Fig. 2 is a plan view with a fragmentary section of the bearing member.

Fig. 3 is a' sectional view at 2-2 of Fig. 1 and 38 of Fig. 2.

Fig. 4 is a plan view of a locking lever arrangement.

The drawings depict a construction primarily adapted to support the workspindle of agear cutting machine. The principle involved, however, canb-readily adapted to support the end of the cutter arbor on a millingmachine. The column or supporting memberl, is secured to the frame 2 ofthe machine bymeans of the bolts 3. Guideways4 are arranged upon theface of the column to accurately guide the bearing memberfr, whichmember is provided wit straps 6 and bolts 7 to secure the bearing memberto the column. An opening 8 whic is co-axial with the spindle to besupported, is provided in the bearing member 5, and can be arranged tosupport any part of the spindle. v

The structure just described constitutes the usual type of columnsupport for cutter or work spindles. This invention, however,contemplates an additional element in the nature of an intermediaryproviding both a slideway and a pivot, said intermediary being suitablyrelated to the column and arm to permit the arm to be shifted verticallyunder control and likewise to be swung to one side of the column; theparts being so arranged that the pivot can be locked and the arm alsoheld by means of a suitably arranged clamp effective on the columnslideways to prevent any slight movement and prohibit any vibration ofthe arm during the tooling operation.

'Continuin with the detailed description it will be noted rom thedrawing that at one end of the column 1, a supplemental or swivel member9 is pivotally arranged and is provided with guide-ways 10, which areaccurately in alinement with the guide-ways 4 on the column 1. Atrunnion 11 secured to the swivel member 9 is revolubly mounted in thebearing 12 of column 1. The trunnion 11 can also be made integral withthe swivel memher 9, but for the convenience of manufacture it is shownin the drawings as a separate member. A spring actuated locking bolt 13is provided in saidswivel member 9, and is arranged to engage theconical opening 14: in the column. The conical opening 14 is provided ina bush 15 which is fitted to the column. Alever 16 is secured to thelocking bolt 13 for the ourpose of withdrawing said locking bolt 'romengagement with the column.

Assuming that the locking bolt 13 is in the operative position as shownin the rawing and the guide-ways 10 are in cinem with the guidc-ways 4:,then the bear member 5 can be moved upward to the position shown in .dotand dash in Fig. 1. The locking bolt can then be withdravni and thebearing member 5 swiveled on its trunnion 11 so that said bearing memberwill. not interfere with the removal of either the cuttcrs or the workfrom the spindle which was supported.

counterweight arrangement is also pro vided for the bearing member 5,which coinprlses a cable 17 secured at 18 to the bearmg member 5. Thecable passes over a sheave 'wheel 19 which is shaft 20 secured inbearings 21 of the swivel ing member 9. A counterweight 22 is attachedto the other end of the cable and. is approximately equal in weight tothe bearing member.

*rom the drawings and description it will be apparent that the inventionprovides avery' rigid supporting member in the form of a column or boxtype, and permits the bearing member to be readily moved to any positionon the column and secured thereto to support the cutter or work spindle,or said tion which will not interfere rotatably mounted on a' bearingmember can be swiveled to a posiwith the removal of the cutters or work.

The arrangement shown is readily adaptable to a milling or other machineby merely modifying the column to suit the member to which it is to beattached.

Having thus revealed this invention, I claim as new and desire to securethe follow ing combinations and elements, or equivalents thereof, byLetters Patent of the United States 1. A machine-tool combining a bed; abox.- type member uprising therefrom columnlike; a second memberextending arm-like transversely thereto and adapted to carry a spindleat its end; an element in the nature of an intermediary pivoted to oneof said parts and having a slidewayeonnection with the other of saidparts; locking means for normally preventmg pivotal action but adaptedto be released to enable the armlike member to be swung to one side'ofthe other member; and a clamping means for engaging slideways onsaidfboietype men ber, whereby the arm-like member may be rigidlysecured against vibration relative to the box-type member. I

2. A machine-tool combining base; a boxtype column uprising therefromand having spaced guide-ways extending vertically along a face thereof;a horizontally extending box-type arm; a member in the nature of anintermediary between said arm and column adapted to enable said arm tobe swung independently of said spaced guideways in horizontal plane awayfrom said face and toward one side of said column, said member havingslideways to cooperatively register with the guide-ways on said columnand also providing a pivot about the axis of which said arm may beswungylocking-moans adapted to be displaced to permit such swinging; andclamping means cooperating with said spaced-guideways for enabling eachof said guide-ways positively and accurately .to lock said arm againstdisplacement or vibration under the strains of a tooling operation.

3. In combination, a box type supporting member having parts thereofpivotally ar ranged, a bearing member adjustably mounted upon saidsupporting member and means to swivel said bearing member and thepivotal portion of said supporting member into a none use position. i

4:. In combination, a box type supporting member, a supplmental memberplvotally arranged upon said supporting member and a bearing memberadjustably mounted upon said supporting member and cooperating with saidsupplemental member whereby said bearing member can be swung intoia noneuse position.

5. In combination, a supporting member,

guide-ways upon said member, a supplemental member pivotally arrangedupon said supporting member and a bearing member adjustably mounted uponsaid supporting member and provided with complementary guide-ways andcooperating with said supplemental member whereby said bearing membercan be moved into none use position.

6. In combination, a supporting member, guide-ways upon said member, asupplemental member pivotally arranged upon said supporting member toswing in a plane, at right angles to said guide-ways, and a hearingmember adjustably arranged upon said supporting member and provided withcomplementary guide-ways and cooperating with said supplemental memberwhereby said bearing member can be moved into a none use position.

7. In combination, a supporting member, guide-ways upon said member, asupplemental member pivotally arranged upon said supporting member andprovided with guide-ways in alinement with said guideways upon saidsupporting member, and a bearing member adjustably arranged upon saidsupporting member and provided with complementary ide-ways andcooperating with said supp emental member, whereby said bearing membercan be swung into a none use position.

8. In combination, a box type supporting member, a supplemental member,pivotally arranged upon said member, a locking means to lock saidsupplemental and supporting member, a bearing member adjustably mountedupon said supporting member, cooperating with said supplemental memberand means to unlock said supplemental member to permit said bearingmember to be moved into a none use position.

9. In combination, a supporting member, guide-ways upon said member, asupplemental member pivotally arranged upon said supporting member,guide ways upon said supplemental member, means to lock saidsupplemental member to said supporting members to bring their respectiveguideways in alinement, a bearing member adjustably mounted on saidsupporting member and cooperating with said supplemental member topermit said bearing member to be moved into a none use position.

10. In combination, a supporting member, a supplemental member plvotallyarranged upon said member, a bearin member adjustably mounted upon saidsupporting member and arranged to cooperate with said supplementalmember, and a counter-balance for said bearing member operative in anyposition of said bearing member.

11. In combination, a supporting member, a supplemental member, apivotal connection between said supplemental and supporting members, abearing member adjustably arranged upon said supporting member andcooperating with said supplemental member, and means coincident with thecenter of said pivotal connection to counterbalance said bearing member.

12. In combination, a supporting member, a supplemental member, apivotal connection between said supplemental and support ing members, abearing member adjustably mounted upon said supporting member andarranged to cooperate with said supplementa] member whereby said bearingmember can be moved into a none use position, a sheave wheel mounted insaid supplemental member, a counterweight connected to said bearingmember and passing over said sheave wheel and suspended in the pivotalaxis of said pivotal connection between said supplemental and supportinmembers.

13. A manually a justable machine-tool combining a base having aslide-way; a boxtype arm-supporting member secured to the base andproviding spaced slideways extending transversely to the base slideway;an arm providing a bearing for a spindle, said arm having its distancefrom said base controlled by the spaced slideways of said arm-supportingmember; a member in the nature of an intermediary for establishing anon-use relation between said arm and said arm-supportin member, saidintermediary being adapte to serve the purpose of enabling said arm tobe swung toward one side of said column; means for locking said armagainst swinging; means for enabling said arm to be quickly raised anddisplaced by hand, said means comprising a counterweight, a sheavesuitably arranged upon said arm-supporting member and a cable attachedto said counterweight and passing over said sheave for diminishing theeffective weight of said arm; and clamping and guiding means mutuallyengaging both of said spaced slideways, whereby said arm may be lockedaccurately and positively in each of its positions.

In witness whereof, I hereunto subscribe my name, as attested by the twosubscribing witnesses.

WILLIAM F. ZIMMERMANN.

